Question

If a = 2 , b = 1 and c = 5 then find value of ab + bc – ca​

Answer 1

Answer:

• ab+bc-ca
• 2(1)+(1)(5)-(5)(2)
• 2+5-10
• 7-10
• -3 this is the answee

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Answer 2

Step-by-step explanation:

ab +bc-ca

=(2×1)+(1×5)-(5×2)

=2+5-10

=-3